Hello, Using Freeswitch 1.4.14 with multitenant, I can not make this @#$@%# telephone to register: model: Soundpoint IP501 firmware: 3.1.8.0070 I have done next: NDLB-force-rport with true and safe values No nat involved (switch and phone on same segment) I have tried multiple combinations of configurations on the phone (using web interface). with or without proxy, different sip extensions, different passwords, different ports. I always get 403 error code. however, i can register only if i do next: after telephone is booted, i edit sip password using the phone keypad. And telephone register. This makes me thing it is a bug on the polycom and has nothing to do with Freeswitch. It works on all other phones I have, snom, bria, linphone. But here I am, maybe someone has workarround this somehow. LD